28653000 has 64 divisors (see below), whose sum is σ = 89406720. Its totient is φ = 7640000.

The previous prime is 28652989. The next prime is 28653013. The reversal of 28653000 is 35682.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776 + ... + 7775.

It is an arithmetic number, because the mean of its divisors is an integer number (1396980).

Almost surely, 2^28653000 is an apocalyptic number.

28653000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28653000 is an abundant number, since it is smaller than the sum of its proper divisors (60753720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28653000 is a wasteful number, since it uses less digits than its factorization.

28653000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575 (or 9561 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 28653000 is about 5352.8497083329. The cubic root of 28653000 is about 306.0013669895.

Adding to 28653000 its reverse (35682), we get a palindrome (28688682).

The spelling of 28653000 in words is "twenty-eight million, six hundred fifty-three thousand".